Trivia: Filming of this episode was delayed for several reasons. One was that the school that they were filming in was discovered to have asbestos just after they started, so they needed to find a new place. And in the scene in and outside of the cafe, filming was delayed when several drunk people wandered onto the set and started messing everything up.

Doctor: So, that's the trap. Or the test or the final judgment, I don't know. But if I kill you, I kill her. Except that implies, in this big grand scheme of Gods and Devils, that she's just a victim. But I've seen a lot of this universe. I've seen fake gods and bad gods and demi-gods and would-be gods - out of all that - out of that whole pantheon - if I believe in one thing... Just one thing... I believe in her.